5bc47f4834
This allows us to invalidate targets based on arbitrary conditions, just by bumping the actor's generation number. The next patches will use this.
52 lines
1.6 KiB
C#
52 lines
1.6 KiB
C#
#region Copyright & License Information
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/*
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* Copyright 2007-2011 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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namespace OpenRA.Traits
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{
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public struct Target // a target: either an actor, or a fixed location.
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{
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public static Target[] NoTargets = {};
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Actor actor;
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Player owner;
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PPos pos;
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bool valid;
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int generation;
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public static Target FromActor(Actor a)
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{
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return new Target
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{
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actor = a,
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valid = (a != null),
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owner = (a != null) ? a.Owner : null,
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generation = a.Generation,
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};
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}
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public static Target FromPos(PPos p) { return new Target { pos = p, valid = true }; }
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public static Target FromCell(CPos c) { return new Target { pos = Util.CenterOfCell(c), valid = true }; }
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public static Target FromOrder(Order o)
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{
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return o.TargetActor != null
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? Target.FromActor(o.TargetActor)
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: Target.FromCell(o.TargetLocation);
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}
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public static readonly Target None = new Target();
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public bool IsValid { get { return valid && (actor == null || (actor.IsInWorld && !actor.IsDead() && actor.Owner == owner && actor.Generation == generation)); } }
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public PPos PxPosition { get { return IsActor ? actor.Trait<IHasLocation>().PxPosition : pos; } }
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public PPos CenterLocation { get { return PxPosition; } }
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public Actor Actor { get { return IsActor ? actor : null; } }
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public bool IsActor { get { return actor != null && !actor.Destroyed; } }
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}
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}
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